.header{
    height: 33vw;
    min-height: 400px;
}
.banner{
    height: 100%;
    width: 100%;
}
.banner img{
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
}
.banner .banner_text{
    position: relative;
    top: 35%;
    left: 10%;
}
.banner .banner_text pre{
    margin-top: 20px;
    font-size: 20px;
    line-height: 30px;
    font-weight: 500;
}
.container{
    width: 100%;
    background: url(../images/cartoonbg.jpg) no-repeat;
    background-size: 100%;
    height: 1000px;
}
.container .content{
    width: 1200px;
    margin: 0 auto;
    padding-top: 100px;
}
.container .content .item{
    display: inline-block;
    width: 304px;
    height: 171px;
    border: 1px solid #000;
    border-radius: 5px;
    overflow: hidden;
    position: relative;
    filter: brightness(.8);
    margin: 45px;
    cursor: pointer;
}
.container .content .item:hover img{
    transform: scale(1.2);
}
.container .content .item img{
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    transition: all ease 200ms;
}
.container .content .item p{
    width: 100%;
    line-height: 40px;
    color: aliceblue;
    text-align: center;
    background-color: rgba(0, 0, 0, .5);
    position: absolute;
    bottom: 0;
}